Colorectal cancer
Hello Doctor, I had a fecal occult blood test a month ago, and the result was negative.
Yesterday, I underwent a colonoscopy, and the doctor found a polyp measuring nearly 0.5 cm, which was removed.
However, I was told to return in a week to discuss the results.
I am 29 years old and have some anxiety, and I am worried that this polyp may not be benign.
Can you tell me what the likelihood is that this polyp is benign? Is it possible to determine the malignancy based on the size of the polyp? I apologize for any inconvenience, and thank you.
kevin, 20~29 year old female. Ask Date: 2020/10/16
Dr. Cai Anshun reply Gastroenterology and Hepatology
Hello: Most small polyps are benign and do not require concern.
Changhua Hospital cares about your health.
Dr.
Tsai An-Shun.
Reply Date: 2020/10/16
More Info
When it comes to polyps found during a colonoscopy, understanding their nature—whether benign or malignant—can indeed be a source of anxiety for many patients. In your case, you mentioned that a polyp approximately 0.5 cm in size was removed during your colonoscopy, and you are understandably concerned about its potential malignancy.
Firstly, it is important to note that the majority of polyps found in the colon are benign. The most common types of polyps include hyperplastic polyps and adenomatous polyps. Hyperplastic polyps are generally considered to be non-cancerous and have a very low risk of progressing to cancer. Adenomatous polyps, on the other hand, have the potential to become cancerous over time, but this risk is influenced by several factors, including the size and type of the adenoma.
Regarding size, polyps that are smaller than 1 cm, like your 0.5 cm polyp, are generally associated with a lower risk of being malignant. Studies have shown that polyps of this size are often benign, particularly if they are hyperplastic. However, adenomatous polyps can also be small and still carry a risk of malignancy, especially if they exhibit certain features such as high-grade dysplasia.
The histological examination of the polyp, which will be conducted on the tissue sample that was removed, is crucial in determining its nature. The pathology report will provide detailed information about the type of polyp, whether it is benign or malignant, and if there are any concerning features that may require further monitoring or intervention.
In your case, since you are 29 years old and have had a negative fecal occult blood test, these factors are favorable. Younger individuals typically have a lower incidence of colorectal cancer, and a negative stool test further reduces the likelihood of malignancy. However, it is essential to follow up with your doctor after the pathology results are available. They will be able to explain the findings in detail and discuss any necessary next steps based on the results.
In summary, while the size of the polyp can provide some insight into its potential nature, the definitive diagnosis will come from the pathology report. The likelihood of your polyp being benign is relatively high, especially given its size and your age. Nevertheless, it is crucial to remain vigilant and follow up with your healthcare provider for the best course of action. If you have ongoing anxiety about this situation, consider discussing your concerns with your doctor, who may provide additional reassurance or resources to help manage your anxiety.
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